<template>
  <div><el-breadcrumb separator="/" class="rumb">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card class="carde">
      <el-alert
        title="注意：只允许第三级分类设置相关参数！"
        show-icon
        :closable="false"
        type="warning">
      </el-alert>
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类：</span>
          <el-cascader
            expandTrigger="hover"
            v-model="selectedCateKeys"
            :options="catelist"
            :props="cateProps"
            @change="handleChange">
          </el-cascader>
        </el-col>
      </el-row>
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" :disabled="isBtnDisabled" size="mini" @click="addDialogVisible = true">动态参数</el-button>
          <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i">{{item}}</el-tag>
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button type="primary" :disabled="isBtnDisabled" size="mini" @click="addDialogVisible = true">静态属性</el-button>
          <el-table :data="onlyTableData" border stripe class="tables">
            <el-table-column type="expand"></el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="静态属性" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%" @close="addDialogClose">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>

    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClose">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        catelist: [],
        cateProps: {
          value: 'cat_id',
          label: 'cat_name',
          children: 'children'
        },
        selectedCateKeys: [],
        activeName: 'many',
        manyTableData: [],
        onlyTableData: [],
        addDialogVisible: false,
        addForm: {
          attr_name: ''
        },
        addFormRules: {
          attr_name: [
            {required: true, message: '请输入参数名称', trigger: 'blur'}
          ]
        },
        editDialogVisible: false,
        editForm: {
          attr_name: ''
        },
        editFormRules: {
          attr_name: [
            {required: true, message: '请输入参数名称', trigger: 'blur'}
          ]
        }
      }    
    },
    created() {
      this.getCateList()
    },
    methods: {
      async getCateList() {
        const { data:res } = await this.$http.get('categories')
        if(res.meta.status !== 200) {
          return this.$message.error('获取商分类失败')
        }
        this.catelist = res.data
      },
      handleChange() {
        this.getParamsData()
      },
      handleTabClick() {
        this.getParamsData()
      },
      async getParamsData() {
        const { data:res } = await this.$http.get(`categories/${this.cateId}/attributes`,{
          params: { sel: this.activeName}
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数列表失败')
        }
        res.data.forEach(item => {
          item.attr_vals = item.attr_vals.split(' ')
        })
        console.log(res);
        if (this.activeName === 'many') {
          this.manyTableData = res.data
        } else {
          this.onlyTableData = res.data
        }
      },
      addDialogClose() {
        this.$refs.addFormRef.resetFields()
      },
      addParams() {
        this.$refs.addFormRef.validate(async valid => {
          if(!valid) return
          const {data:res } = await this.$http.post(`categories/${this.cateId}/attributes`, {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName
          })
          if(res.meta.status !== 201) {
            return this.$message.error('添加参数列表失败')
          }
          this.$message.success('添加参数列表成功')
          this.addDialogVisible = false
          this.getParamsData()
        })
      },
      async showEditDialog(attr_id) {
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`, {
          params: {attr_sel: this.activeName}
        })
        if(res.meta.status !== 200) {
          return this.$message.error('获取参数列表失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
      },
      editDialogClose() {
        this.$refs.editFormRef.resetFields()
      },
      editParams() {
        this.$refs.editFormRef.validate(async valid => {
          if(!valid) return
          const {data:res } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`, {
            attr_name: this.editForm.attr_name,
            attr_sel: this.activeName
          })
          if(res.meta.status !== 200) {
            return this.$message.error('修改参数列表失败')
          }
          this.$message.success('修改参数列表成功')
          this.editDialogVisible = false
          this.getParamsData()
        })
      },
      async removeParams(attr_id) {
        const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
        if(res.meta.status !== 200) {
            return this.$message.error('删除参数失败')
          }
          this.$message.success('删除参数成功')
          this.getParamsData()
      }
    },
    computed: {
      isBtnDisabled() {
        if (this.selectedCateKeys.length !== 3) {
          return true
        }
        return false
      },
      cateId() {
        if (this.selectedCateKeys.length === 3) {
          return this.selectedCateKeys[2]
        }
        return null
      },
      titleText() {
        if (this.activeName === 'many') {
          return '动态参数'
        }
        return '静态属性'
      }
    }
  }
</script>

<style scoped lang="less">
  .carde {
    margin-top: 15px;
  }
  .cat_opt {
    margin: 15px 0;
  }
 .tables {
    overflow: scroll;
    height: 100vh;
  }
  .el-tag {
    margin: 10px;
  }
</style>